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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-05-22 18:18:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-16 11:06:40 +0100
commit98c672cf1fa2a56f6f43e3f48b1208b83845582c (patch)
tree39ac68eb0d260f090cebabff9a2f2cf8c6bcebd2
parentb65b4781fbd5846a82cdac0c32818af1a7452d1f (diff)
downloadlinux-98c672cf1fa2a56f6f43e3f48b1208b83845582c.tar.gz
ARM: Move platform memory reservations out of generic code
Move the platform specific bootmem memory reservations out of arch/arm/mm/mmu.c into their respective platform files. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/include/asm/mach/arch.h1
-rw-r--r--arch/arm/mach-clps711x/edb7211-arch.c8
-rw-r--r--arch/arm/mach-integrator/common.h1
-rw-r--r--arch/arm/mach-integrator/core.c12
-rw-r--r--arch/arm/mach-integrator/integrator_ap.c3
-rw-r--r--arch/arm/mach-integrator/integrator_cp.c3
-rw-r--r--arch/arm/mach-pxa/palmt5.c7
-rw-r--r--arch/arm/mach-pxa/palmtreo.c9
-rw-r--r--arch/arm/mach-s3c2410/mach-h1940.c9
-rw-r--r--arch/arm/mach-s3c2440/mach-rx1950.c9
-rw-r--r--arch/arm/mach-s3c2440/mach-rx3715.c9
-rw-r--r--arch/arm/mach-u300/u300.c17
-rw-r--r--arch/arm/mm/init.c5
-rw-r--r--arch/arm/mm/mm.h3
-rw-r--r--arch/arm/mm/mmu.c63
-rw-r--r--arch/arm/mm/nommu.c2
16 files changed, 98 insertions, 63 deletions
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index c59842dc7cb..d425f2b6efe 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -37,6 +37,7 @@ struct machine_desc {
void (*fixup)(struct machine_desc *,
struct tag *, char **,
struct meminfo *);
+ void (*reserve)(void);/* reserve mem blocks */
void (*map_io)(void);/* IO mapping function */
void (*init_irq)(void);
struct sys_timer *timer; /* system tick timer */
diff --git a/arch/arm/mach-clps711x/edb7211-arch.c b/arch/arm/mach-clps711x/edb7211-arch.c
index 41a4425617c..077f4051a06 100644
--- a/arch/arm/mach-clps711x/edb7211-arch.c
+++ b/arch/arm/mach-clps711x/edb7211-arch.c
@@ -18,6 +18,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
+#include <linux/bootmem.h>
#include <linux/types.h>
#include <linux/string.h>
@@ -29,6 +30,12 @@
extern void edb7211_map_io(void);
+/* Reserve screen memory region at the start of main system memory. */
+static void __init edb7211_reserve(void)
+{
+ reserve_bootmem(PHYS_OFFSET, 0x00020000, BOOTMEM_DEFAULT);
+}
+
static void __init
fixup_edb7211(struct machine_desc *desc, struct tag *tags,
char **cmdline, struct meminfo *mi)
@@ -55,6 +62,7 @@ MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
.boot_params = 0xc0020100, /* 0xc0000000 - 0xc001ffff can be video RAM */
.fixup = fixup_edb7211,
.map_io = edb7211_map_io,
+ .reserve = edb7211_reserve,
.init_irq = clps711x_init_irq,
.timer = &clps711x_timer,
MACHINE_END
diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h
new file mode 100644
index 00000000000..5f96e1518aa
--- /dev/null
+++ b/arch/arm/mach-integrator/common.h
@@ -0,0 +1 @@
+void integrator_reserve(void);
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index b02cfc06e0a..f815a1863f7 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -14,6 +14,7 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/bootmem.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/termios.h>
@@ -30,6 +31,7 @@
#include <asm/system.h>
#include <asm/leds.h>
#include <asm/mach/time.h>
+#include <asm/pgtable.h>
static struct amba_pl010_data integrator_uart_data;
@@ -215,3 +217,13 @@ void cm_control(u32 mask, u32 set)
}
EXPORT_SYMBOL(cm_control);
+
+/*
+ * We need to stop things allocating the low memory; ideally we need a
+ * better implementation of GFP_DMA which does not assume that DMA-able
+ * memory starts at zero.
+ */
+void __init integrator_reserve(void)
+{
+ reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET, BOOTMEM_DEFAULT);
+}
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 227cf4d0508..6ab5a03ab9d 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -48,6 +48,8 @@
#include <asm/mach/map.h>
#include <asm/mach/time.h>
+#include "common.h"
+
/*
* All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
* is the (PA >> 12).
@@ -502,6 +504,7 @@ MACHINE_START(INTEGRATOR, "ARM-Integrator")
.io_pg_offst = ((0xf1600000) >> 18) & 0xfffc,
.boot_params = 0x00000100,
.map_io = ap_map_io,
+ .reserve = integrator_reserve,
.init_irq = ap_init_irq,
.timer = &ap_timer,
.init_machine = ap_init,
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index cde57b2b83b..05db40e3c4f 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -43,6 +43,8 @@
#include <plat/timer-sp.h>
+#include "common.h"
+
#define INTCP_PA_FLASH_BASE 0x24000000
#define INTCP_FLASH_SIZE SZ_32M
@@ -601,6 +603,7 @@ MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
.io_pg_offst = ((0xf1600000) >> 18) & 0xfffc,
.boot_params = 0x00000100,
.map_io = intcp_map_io,
+ .reserve = integrator_reserve,
.init_irq = intcp_init_irq,
.timer = &cp_timer,
.init_machine = intcp_init,
diff --git a/arch/arm/mach-pxa/palmt5.c b/arch/arm/mach-pxa/palmt5.c
index 5305a3993e6..39fd788ab63 100644
--- a/arch/arm/mach-pxa/palmt5.c
+++ b/arch/arm/mach-pxa/palmt5.c
@@ -21,6 +21,7 @@
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
+#include <linux/bootmem.h>
#include <linux/pda_power.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
@@ -396,6 +397,11 @@ static void __init palmt5_udc_init(void)
}
}
+static void __init palmt5_reserve(void)
+{
+ reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
+}
+
static void __init palmt5_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(palmt5_pin_config));
@@ -421,6 +427,7 @@ MACHINE_START(PALMT5, "Palm Tungsten|T5")
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.boot_params = 0xa0000100,
.map_io = pxa_map_io,
+ .reserve = palmt5_reserve,
.init_irq = pxa27x_init_irq,
.timer = &pxa_timer,
.init_machine = palmt5_init
diff --git a/arch/arm/mach-pxa/palmtreo.c b/arch/arm/mach-pxa/palmtreo.c
index d8b4469607a..f5db4f7d715 100644
--- a/arch/arm/mach-pxa/palmtreo.c
+++ b/arch/arm/mach-pxa/palmtreo.c
@@ -20,6 +20,7 @@
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
+#include <linux/bootmem.h>
#include <linux/pda_power.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
@@ -633,6 +634,12 @@ static void __init treo_lcd_power_init(void)
treo_lcd_screen.pxafb_lcd_power = treo_lcd_power;
}
+static void __init treo_reserve(void)
+{
+ reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
+ reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE);
+}
+
static void __init treo_init(void)
{
pxa_set_ffuart_info(NULL);
@@ -668,6 +675,7 @@ MACHINE_START(TREO680, "Palm Treo 680")
.io_pg_offst = io_p2v(0x40000000),
.boot_params = 0xa0000100,
.map_io = pxa_map_io,
+ .reserve = treo_reserve,
.init_irq = pxa27x_init_irq,
.timer = &pxa_timer,
.init_machine = treo680_init,
@@ -691,6 +699,7 @@ MACHINE_START(CENTRO, "Palm Centro 685")
.io_pg_offst = io_p2v(0x40000000),
.boot_params = 0xa0000100,
.map_io = pxa_map_io,
+ .reserve = treo_reserve,
.init_irq = pxa27x_init_irq,
.timer = &pxa_timer,
.init_machine = centro_init,
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 779b45b3f80..2407aab4d1b 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
+#include <linux/bootmem.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/sysdev.h>
@@ -304,6 +305,13 @@ static void __init h1940_map_io(void)
s3c_pm_init();
}
+/* H1940 and RX3715 need to reserve this for suspend */
+static void __init h1940_reserve(void)
+{
+ reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT);
+ reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
+}
+
static void __init h1940_init_irq(void)
{
s3c24xx_init_irq();
@@ -346,6 +354,7 @@ MACHINE_START(H1940, "IPAQ-H1940")
.io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
.boot_params = S3C2410_SDRAM_PA + 0x100,
.map_io = h1940_map_io,
+ .reserve = h1940_reserve,
.init_irq = h1940_init_irq,
.init_machine = h1940_init,
.timer = &s3c24xx_timer,
diff --git a/arch/arm/mach-s3c2440/mach-rx1950.c b/arch/arm/mach-s3c2440/mach-rx1950.c
index 8603b577a24..f26d5d60c13 100644
--- a/arch/arm/mach-s3c2440/mach-rx1950.c
+++ b/arch/arm/mach-s3c2440/mach-rx1950.c
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
+#include <linux/bootmem.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/init.h>
@@ -570,12 +571,20 @@ static void __init rx1950_init_machine(void)
platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
}
+/* H1940 and RX3715 need to reserve this for suspend */
+static void __init rx1950_reserve(void)
+{
+ reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT);
+ reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
+}
+
MACHINE_START(RX1950, "HP iPAQ RX1950")
/* Maintainers: Vasily Khoruzhick */
.phys_io = S3C2410_PA_UART,
.io_pg_offst = (((u32) S3C24XX_VA_UART) >> 18) & 0xfffc,
.boot_params = S3C2410_SDRAM_PA + 0x100,
.map_io = rx1950_map_io,
+ .reserve = rx1950_reserve,
.init_irq = s3c24xx_init_irq,
.init_machine = rx1950_init_machine,
.timer = &s3c24xx_timer,
diff --git a/arch/arm/mach-s3c2440/mach-rx3715.c b/arch/arm/mach-s3c2440/mach-rx3715.c
index d2946de3f36..6ebdb7bcf08 100644
--- a/arch/arm/mach-s3c2440/mach-rx3715.c
+++ b/arch/arm/mach-s3c2440/mach-rx3715.c
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
+#include <linux/bootmem.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/tty.h>
@@ -191,6 +192,13 @@ static void __init rx3715_map_io(void)
s3c24xx_init_uarts(rx3715_uartcfgs, ARRAY_SIZE(rx3715_uartcfgs));
}
+/* H1940 and RX3715 need to reserve this for suspend */
+static void __init rx3715_reserve(void)
+{
+ reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT);
+ reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
+}
+
static void __init rx3715_init_irq(void)
{
s3c24xx_init_irq();
@@ -214,6 +222,7 @@ MACHINE_START(RX3715, "IPAQ-RX3715")
.io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
.boot_params = S3C2410_SDRAM_PA + 0x100,
.map_io = rx3715_map_io,
+ .reserve = rx3715_reserve,
.init_irq = rx3715_init_irq,
.init_machine = rx3715_init_machine,
.timer = &s3c24xx_timer,
diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c
index d2a0b8847a1..178dca4f955 100644
--- a/arch/arm/mach-u300/u300.c
+++ b/arch/arm/mach-u300/u300.c
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#include <linux/bootmem.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <mach/hardware.h>
@@ -22,6 +23,21 @@
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
+static void __init u300_reserve(void)
+{
+ /*
+ * U300 - This platform family can share physical memory
+ * between two ARM cpus, one running Linux and the other
+ * running another OS.
+ */
+#ifdef CONFIG_MACH_U300_SINGLE_RAM
+#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \
+ CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
+ reserve_bootmem(PHYS_OFFSET, 0x00100000, BOOTMEM_DEFAULT);
+#endif
+#endif
+}
+
static void __init u300_init_machine(void)
{
u300_init_devices();
@@ -49,6 +65,7 @@ MACHINE_START(U300, MACH_U300_STRING)
.io_pg_offst = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = BOOT_PARAMS_OFFSET,
.map_io = u300_map_io,
+ .reserve = u300_reserve,
.init_irq = u300_init_irq,
.timer = &u300_timer,
.init_machine = u300_init_machine,
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 4d2720888c5..1a227eea64b 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -358,7 +358,7 @@ static void arm_memory_present(struct meminfo *mi)
}
#endif
-void __init bootmem_init(void)
+void __init bootmem_init(struct machine_desc *mdesc)
{
struct meminfo *mi = &meminfo;
unsigned long min, max_low, max_high;
@@ -380,6 +380,9 @@ void __init bootmem_init(void)
*/
reserve_special_regions();
+ if (mdesc->reserve)
+ mdesc->reserve();
+
/*
* If the initrd is present, reserve its memory.
*/
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 7b19c90ab29..afafe4fc543 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -28,5 +28,6 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
#endif
-void __init bootmem_init(void);
+struct machine_desc;
+void __init bootmem_init(struct machine_desc *);
void reserve_special_regions(void);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index ddb1bee6de7..1676d017a93 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -17,7 +17,6 @@
#include <linux/sort.h>
#include <asm/cputype.h>
-#include <asm/mach-types.h>
#include <asm/sections.h>
#include <asm/cachetype.h>
#include <asm/setup.h>
@@ -831,8 +830,6 @@ static inline void prepare_page_table(void)
*/
void __init reserve_special_regions(void)
{
- unsigned long res_size = 0;
-
/*
* Register the kernel text and data with bootmem.
* Note that this can only be in node 0.
@@ -850,68 +847,14 @@ void __init reserve_special_regions(void)
reserve_bootmem(__pa(swapper_pg_dir),
PTRS_PER_PGD * sizeof(pgd_t), BOOTMEM_DEFAULT);
- /*
- * Hmm... This should go elsewhere, but we really really need to
- * stop things allocating the low memory; ideally we need a better
- * implementation of GFP_DMA which does not assume that DMA-able
- * memory starts at zero.
- */
- if (machine_is_integrator() || machine_is_cintegrator())
- res_size = __pa(swapper_pg_dir) - PHYS_OFFSET;
-
- /*
- * These should likewise go elsewhere. They pre-reserve the
- * screen memory region at the start of main system memory.
- */
- if (machine_is_edb7211())
- res_size = 0x00020000;
- if (machine_is_p720t())
- res_size = 0x00014000;
-
- /* H1940, RX3715 and RX1950 need to reserve this for suspend */
-
- if (machine_is_h1940() || machine_is_rx3715()
- || machine_is_rx1950()) {
- reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT);
- reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT);
- }
-
- if (machine_is_palmld() || machine_is_palmtx()) {
- reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
- reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_treo680() || machine_is_centro()) {
- reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE);
- reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE);
- }
-
- if (machine_is_palmt5())
- reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE);
-
- /*
- * U300 - This platform family can share physical memory
- * between two ARM cpus, one running Linux and the other
- * running another OS.
- */
- if (machine_is_u300()) {
-#ifdef CONFIG_MACH_U300_SINGLE_RAM
-#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \
- CONFIG_MACH_U300_2MB_ALIGNMENT_FIX
- res_size = 0x00100000;
-#endif
-#endif
- }
-
#ifdef CONFIG_SA1111
/*
* Because of the SA1111 DMA bug, we want to preserve our
* precious DMA-able memory...
*/
- res_size = __pa(swapper_pg_dir) - PHYS_OFFSET;
+ reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET,
+ BOOTMEM_DEFAULT);
#endif
- if (res_size)
- reserve_bootmem(PHYS_OFFSET, res_size, BOOTMEM_DEFAULT);
}
/*
@@ -1056,7 +999,7 @@ void __init paging_init(struct machine_desc *mdesc)
sanity_check_meminfo();
prepare_page_table();
map_lowmem();
- bootmem_init();
+ bootmem_init(mdesc);
devicemaps_init(mdesc);
kmap_init();
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 25376d480b8..ed58ddbbc5b 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -46,7 +46,7 @@ void __init reserve_special_regions(void)
*/
void __init paging_init(struct machine_desc *mdesc)
{
- bootmem_init();
+ bootmem_init(mdesc);
}
/*